E 350 V8-5.4L (2008)
Exhaust System - Exploded View, Stripped Chassis (5-Speed Transmission) (Part 2)
Removal and Installation
NOTE: Exhaust fasteners are of a prevailing torque design. Use only new fasteners with the same part number as the original. Torque values must be
used as specified during reassembly to make sure of correct retention of exhaust components.
1. With the vehicle in NEUTRAL, position it on a hoist. For additional information, refer to Maintenance/Service and Repair.
2. Support the muffler and tailpipe assembly and catalytic converter with a safety stand.
3. Release the front muffler and tailpipe and (if equipped, the extension pipe) isolators.
4. Remove the 3 exhaust Y-pipe-to-catalytic converter nuts and discard. Remove the exhaust Y-pipe-to-catalytic converter support bracket.
^
To install, tighten the new nuts to 40 Nm (30 lb-ft).
5. Position the catalytic converter and muffler and tailpipe assembly rearward from the exhaust Y-pipe and discard the gasket.
6. Disconnect the heated oxygen sensors (HO2S) and the catalyst monitor sensors electrical connectors.
7. NOTE: LH shown, RH similar.
Remove the 2 LH and 1 RH heat shield-to-crossmember bolts.
^
To install, tighten to 10 Nm (89 lb-in).
8. Remove the 2 crossmember-to-rear transmission mount nuts.
^
To install, tighten to 95 Nm (70 lb-ft).
